State Key Laboratory of Organic/Inorganic Composites;
Beijing Advanced Innovation Center for Soft Matter Science and Engineering;
Beijing University of Chemical Technology;
Beijing 100029;
China;
College of Chemistry;
and Green Catalysis Center;
Zhengzhou University;
Zhengzhou 450001;
China;
School of Chemical and Environmental Engineering;
Pingdingshan University;
Pingdingshan 467000;
China;
Beijing Engineering Research Center for the Synthesis and Applications of Waterborne Polymers;
Beijing University of Chemical Technology;
Beijing 100029;
China;
organic solar cells; perylene-diimides; photovoltaic acceptor; cathode interlayer;